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Hook Development

Designs Web3.0 apps with a focus on decentralization and blockchain integration.

Updated Jan 30, 2026
Search Tags:#automation#security#validation#plugins#event-driven#claude-code#hook-development
One-click install
npx skills add https://github.com/czambr/04-altura --skill hook-development-czambr
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Hook Development
Source: https://github.com/czambr/04-altura/tree/main/.agents/skills/hook-development
Command: npx skills add https://github.com/czambr/04-altura --skill hook-development-czambr

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires jq, and includes scripts (resource) and references (resource) components.

What problem does it solve?

Hook Development provides a structured approach to designing and implementing Claude Code plugin hooks, enabling developers to create event-driven automation, enforce policies, and integrate prompts or deterministic checks into workflows.

Core Features & Use Cases

  • Define and orchestrate PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, and other hook events to validate tool use, load context, and ensure compliance.
  • Support both prompt-based hooks for flexible reasoning and command-based hooks for fast deterministic checks, with guidance on wiring into hooks.json and runtime behavior.
  • Organize related resources with optional scripts/, references/, and assets/ directories to support testing, documentation, and runtime operations.

Quick Start

Create a prompt-based PreToolUse hook that analyzes input and returns an approve or deny decision.

Frequently Asked Questions about Hook Development

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build event-driven automation hooks for Claude Code?▼

Event-driven Claude Code hooks are built by defining PreToolUse, PostToolUse, Stop, and SessionStart configurations that output JSON to validate tool use, load context, and enforce policies in development workflows.

What is the difference between prompt-based and command-based hooks in Claude Code?▼

Prompt-based hooks provide flexible reasoning for analyzing inputs, while command-based hooks deliver fast deterministic checks. Both are wired into the hook configuration to manage runtime behavior for different validation needs.

How do I validate tool usage and enforce policies with Claude Code hooks?▼

You can validate tool usage and enforce policies by configuring a PreToolUse hook that analyzes input parameters and returns an approve or deny JSON decision before the tool executes.

Does Claude Code hook development require specific dependencies?▼

Claude Code hook development requires the jq dependency for processing JSON outputs. You also need a SKILL.md frontmatter with name and description, plus optional directories for scripts, references, and assets.

Can I load custom context automatically when a Claude Code session starts?▼

You can load custom context automatically when a session starts by configuring a SessionStart hook event that injects required context into the development workflow before interaction begins.

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